An electric vehicle starting system and its control method

Abstract

The invention discloses an electric automobile starting system and a control method thereof. The electric automobile starting system is characterized in that one end of a first electromagnetic clutch is connected with a gearbox shaft; the other end of the first electromagnetic clutch is connected with a pump shaft of a first hydraulic motor / hydraulic pump; one end of a second electromagnetic clutch is connected with a revolving shaft of a transmission / differential mechanism; the other end of the second electromagnetic clutch is connected with a pump shaft of a second hydraulic motor / hydraulic pump; in the first hydraulic motor / hydraulic pump and the second hydraulic motor / hydraulic pump, energy accumulators are taken as energy accumulating devices; a sensing unit is used for outputting each detection signal to an entire vehicle controller; an output control signal of an electromagnetic clutch control unit is connected with the signal control ends of the first electromagnetic clutch and the second electromagnetic clutch through CAN (Controller Area Network) buses. According to the electric automobile starting system, stable start of the electric automobile is realized, and meanwhile the phenomena of rolling or slipping of the automobile during start on slopes are avoided.

Description

technical field [0001] The invention relates to a starting system of an electric vehicle and a control method thereof, which are applied in the field of electric vehicles, in particular to the starting control of the electric vehicle. Background technique [0002] With the development of social economy, energy crisis and environmental pollution have become an important factor restricting economic development. The number of traditional cars is increasing, and the pressure on the environment is also increasing. Therefore, the research and development of electric vehicles is of great significance to solving energy problems and reducing environmental pollution. [0003] At present, the research on electric vehicles is immature, and there are many problems to be solved. For example, when an electric vehicle starts, it will produce a certain impact and noise, which is determined by the characteristics of the power transmission system of the electric vehicle. Due to the gap betwee...

AI Technical Summary

Problems solved by technology

For another example, when an electric vehicle starts up and downhill, due to the special structure of the electric vehicle, the driver is prone to slipping and sliding when starting on a slope.

These problems have not been fully resolved, affecting the driver's safety and comfort

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